US11021096B2 - Method for illuminating a road area by projecting a trajectory, and motor vehicle - Google Patents

Method for illuminating a road area by projecting a trajectory, and motor vehicle Download PDF

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US11021096B2
US11021096B2 US16/771,850 US201816771850A US11021096B2 US 11021096 B2 US11021096 B2 US 11021096B2 US 201816771850 A US201816771850 A US 201816771850A US 11021096 B2 US11021096 B2 US 11021096B2
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motor vehicle
trajectory
light distribution
road
course
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US20210107394A1 (en
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Johannes Reim
Said Omerbegovic
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Audi AG
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Audi AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
    • B60Q1/085—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to special conditions, e.g. adverse weather, type of road, badly illuminated road signs or potential dangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
    • B60Q1/12—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to steering position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • B60Q1/143—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
    • B60Q1/507—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking specific to autonomous vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
    • B60Q1/543—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking for indicating other states or conditions of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/10—Indexing codes relating to particular vehicle conditions
    • B60Q2300/11—Linear movements of the vehicle
    • B60Q2300/112—Vehicle speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/10—Indexing codes relating to particular vehicle conditions
    • B60Q2300/11—Linear movements of the vehicle
    • B60Q2300/114—Vehicle acceleration or deceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/30—Indexing codes relating to the vehicle environment
    • B60Q2300/32—Road surface or travel path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/50—Projected symbol or information, e.g. onto the road or car body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2900/00—Features of lamps not covered by other groups in B60Q
    • B60Q2900/40—Several lamps activated in sequence, e.g. sweep effect, progressive activation

Definitions

  • the disclosure relates to a method for illuminating a road area by a motor vehicle.
  • a trajectory which relates to a future movement of the motor vehicle on a road, is projected onto the road.
  • a second aspect of the disclosure relates to a motor vehicle having an illumination apparatus.
  • high-resolution headlamps are known, which in particular can resolve at least 200, 500, 1000 or 2000 pixels. Such high-resolution headlamps can be used for the projection of images and symbols onto the road.
  • a high-resolution headlamp may, for example, have a matrix lighting, an assembly of micromirrors, an assembly of liquid crystals or a laser scanner.
  • DE 10 2014 226 254 A1 reveals a method for operating a signaling device of an autonomously or partially autonomously driving motor vehicle, wherein the signaling device is actuated as a function of a detected traffic participant to indicate an information about a further behavior of the motor vehicle and/or the detected traffic participant.
  • At least one signaling means of the signaling device may be arranged on a headlamp of the motor vehicle.
  • DE 10 2011 081 394 B3 relates to a method for highlighting an expected movement path of a vehicle, wherein the method comprises a step of determining a traffic situation using an information about an environment of the vehicle. Based on the detected traffic situation, an expected movement path is highlighted by a road marking device. For example, a headlamp of the vehicle can be actuated as the road marking device.
  • DE 10 2012 025 354 A1 relates to a device and a method for indicating a change of a dynamic parameter of a means of transport.
  • a predefined irregularity is projected onto a surface in the surrounding of the means of transport.
  • the predefined irregularity is projected onto the surface by a lighting, for example a front headlamp.
  • FIG. 1 shows a motor vehicle having an illumination apparatus for illuminating a road area of a road, according to some embodiments of the present disclosure.
  • the disclosure relates to the object of providing an improved overview of the driving of a motor vehicle, especially for further traffic participants.
  • the disclosure relates to a method for illuminating a road area by a motor vehicle with the following steps: Determining a trajectory relating to a future movement of the motor vehicle on a road, calculating a light distribution for a headlamp of the motor vehicle as a function of the determined trajectory in such a manner that a course of the trajectory is projected onto the road as part of the light distribution, and emitting a brightness distribution corresponding to the light distribution onto the road by means of the headlamp.
  • the trajectory can be determined based on a traffic situation in which the motor vehicle is located.
  • the traffic situation can be detected with an environment sensor of the motor vehicle, which for example comprises a radar sensor, a Lidar sensor, a camera and/or an ultrasonic sensor.
  • control instructions of the driver or a control apparatus for an autonomous operation of the vehicle can be detected for determining the trajectory.
  • the future movement of the motor vehicle on the road can be specified by the control instructions.
  • the control instructions continuously actuate a steering apparatus, a braking apparatus and an acceleration apparatus of the vehicle.
  • it can be deduced from the control instructions which steering maneuvers, braking maneuvers and acceleration maneuvers the motor vehicle will perform during the future movement on the road.
  • the future movement of the motor vehicle relates in particular to a movement of the motor vehicle for at least five, ten, 20 or 50 meters.
  • the future movement is advantageously not only extrapolated from a momentary acceleration, steering or deceleration of the motor vehicle, but calculated in advance.
  • the light distribution is additionally calculated as a function of the determined trajectory in such a manner that based on the light distribution in addition to the trajectory, also an acceleration of the motor vehicle is symbolized parallel to its longitudinal direction.
  • both the course of the trajectory and a change in velocity of the motor vehicle are symbolized by the light distribution.
  • Acceleration of the motor vehicle parallel to its longitudinal direction is understood to be both positive acceleration (speed up) and negative acceleration (braking).
  • acceleration of the motor vehicle parallel to its longitudinal direction is understood to be both an increase and a decrease in velocity.
  • the acceleration of the motor vehicle parallel to its longitudinal direction is represented by a symbol which is projected onto the road as part of the light distribution.
  • a symbol can be predefined for this purpose, which is particularly intuitively understandable for drivers of further motor vehicles.
  • the symbol may preferably represent in which direction the acceleration of the motor vehicle is directed parallel to its longitudinal direction and/or the intensity of this acceleration.
  • the symbol can represent whether the vehicle is speeding up or braking. In this manner, the acceleration of the motor vehicle parallel to its longitudinal direction can be symbolized in a particularly intuitively understandable manner.
  • the course of the trajectory can be represented by a line which resembles the course of the trajectory and is projected onto the road as part of the light distribution. Thereby, the line can have the course that the motor vehicle will follow in a future movement.
  • the future movement of the motor vehicle can be visualized in a particularly intuitive and understandable manner.
  • the light distribution is calculated in such a manner that the symbol next to the line is projected onto the road.
  • the symbol representing the change in velocity or acceleration of the motor vehicle is shown next to the line representing the course of the trajectory. In this manner, an even more intuitively understandable representation of the future movement of the motor vehicle is possible.
  • the acceleration of the motor vehicle parallel to its longitudinal direction is represented by at least one arrow, which is directed corresponding to a direction of the acceleration and is projected onto the road as part of the light distribution.
  • a change in velocity of the motor vehicle is represented by the at least one arrow, which is directed corresponding to the direction of the change in velocity.
  • the at least one arrow is directed in the driving direction to represent a future acceleration of the motor vehicle and is directed against the driving direction to represent a future braking of the motor vehicle.
  • the at least one arrow can be part of the symbol above.
  • the symbol consists partly or exclusively of the at least one arrow.
  • the acceleration of the motor vehicle parallel to its longitudinal direction can be made particularly intuitively recognizable by the arrow.
  • the at least one arrow/symbol is preferably projected at that point in the course of the trajectory where the motor vehicle will experience the acceleration along the longitudinal direction. In this manner, the symbol/the at least one arrow can show not only that the vehicle is accelerating parallel to its longitudinal axis, but also at what point.
  • a future stopping of the motor vehicle is represented by a line, in particular a stop line, which is directed orthogonally to the trajectory and is projected onto the road as part of the light distribution.
  • Future stopping of the motor vehicle means, in particular, that the motor vehicle brakes to a standstill during its future movement.
  • the trajectory may end in a stop point where the vehicle comes to a rest.
  • the further line, especially the stop line can run orthogonally to the trajectory through this stop point.
  • the further line, in particular the stop line can be shown in this position, in which the motor vehicle will come to a rest during future stopping. In this manner, it can be shown to other traffic participants that the motor vehicle will stop in the future.
  • determining the trajectory it can, for example, be received from a driver assistance system for controlling an autonomous drive.
  • a driver assistance system usually continuously calculates a trajectory to control such autonomous driving.
  • the trajectory can be calculated by the driver assistance system. This has the advantage that it can be made clear to other traffic participants in which manner the vehicle will be moved autonomously in the future.
  • the acceleration of the motor vehicle parallel to its longitudinal direction is represented along the trajectory through an animation of a temporally variable brightness distribution, which is projected onto the road corresponding to the light distribution.
  • a light source is displayed on the road by means of the temporally variable brightness distribution.
  • the animation of the temporally variable brightness distribution can have a movement direction.
  • a direction of a group velocity and/or phase velocity of the light source can correspond to the movement direction.
  • a further particularly intuitive possibility for displaying the acceleration of the vehicle parallel to its longitudinal direction results from the temporally variable brightness distribution.
  • a brightness of the light distribution along the course of the trajectory increases if a velocity of the motor vehicle along the course of the trajectory will increase in the future and decreases if the velocity of the motor vehicle along the course of the trajectory will decrease in the future.
  • the brightness of the light distribution increases when the motor vehicle is speeding up in future and decreases when the motor vehicle brakes in future.
  • the brightness of the light distribution can be reduced locally along the course of the trajectory relative to a basic value if the velocity of the motor vehicle will decrease in the future and be raised if the velocity of the motor vehicle will increase in the future.
  • the brightness of the light distribution is adapted at the point along the course of the trajectory in which the change in velocity will be made.
  • the disclosure also encompasses a motor vehicle having an illumination apparatus for illuminating a road area with a determination unit for determining a trajectory which relates to a future movement of the motor vehicle on a road, a calculation unit for calculating a light distribution for a headlamp of the motor vehicle as a function of the determined trajectory in such a manner that a course of the trajectory is projected onto the road as part of the light distribution, and a control unit for actuating the headlamp in such a manner that it emits a brightness distribution corresponding to the light distribution.
  • the calculation unit is designed to additionally calculate the light distribution as a function of the determined trajectory in such a manner that an acceleration of the motor vehicle parallel to its longitudinal direction is also symbolized based on the light distribution additionally to the trajectory.
  • the headlamp is preferably executed as a high-resolution headlamp.
  • the headlamp may, for example, have a matrix lighting, an assembly of micromirrors, an assembly of liquid crystals or a laser scanner.
  • the motor vehicle is in particular a motor car, for example a passenger car or a lorry.
  • the motor vehicle may have an internal combustion engine and/or an electric engine for propulsion.
  • the motor vehicle is configured to perform a fully or partially autonomous drive.
  • the motor vehicle may have a driver assistance system to control an autonomous drive of the vehicle.
  • the determination unit is designed to receive the trajectory from the driver assistance system.
  • the disclosure also includes the combinations of the described embodiments.
  • the disclosure also includes further embodiments of the motor vehicle according to the disclosure, which have features such as those previously described in connection with the further embodiments of the method according to the disclosure. For this reason, the corresponding embodiments of the motor vehicle according to the disclosure are not described again here.
  • FIG. 1 shows in a schematic aerial view a motor vehicle, whose future movement is projected onto a road.
  • the exemplary embodiments explained below are preferred embodiments of the disclosure.
  • the components of the embodiments that are described each constitute individual features of the disclosure to be considered independently of each other, which individually also further develop the disclosure independently of each other and are thus also to be considered part of the disclosure both individually and in a combination that is different from the combination described.
  • the embodiments described can also be supplemented by further features of the disclosure, which have already been described.
  • FIG. 1 shows a motor vehicle 1 having an illumination apparatus 9 for illuminating a road area of a road 8 .
  • the illumination apparatus 9 comprises two headlamps 2 emitting a brightness distribution 20 in a respective emission area 21 . Furthermore, the illumination apparatus 9 presently comprises a determination unit 3 , a calculation unit 4 and a control unit 5 .
  • the control unit 5 is designed to control the brightness distribution 20 of the headlamps 2 .
  • the determination unit 3 determines a trajectory which relates to a future movement of the motor vehicle 1 on the road 8 .
  • the trajectory clearly specifies the future movement of the motor vehicle 1 on the road 8 for a route of at least five meters, ten meters, 20 meters, 50 meters or 100 meters.
  • a sequence of steering maneuvers and acceleration maneuvers can be specified for the motor vehicle 1 .
  • the trajectory can be determined from a traffic situation on the road 8 and/or based on the control instructions of a driver of the motor vehicle 1 .
  • the present vehicle 1 is, however, designed for performing an autonomous drive. During the autonomous drive, the motor vehicle 1 can control itself without the driver of the motor vehicle 1 engaging. In this case, for example, the motor vehicle 1 has no driver, but only occupants.
  • the motor vehicle 1 could also be empty.
  • the motor vehicle 1 has a driver assistance system 6 .
  • the driver assistance system 6 is designed to control the autonomous drive of the motor vehicle 1 .
  • the trajectory relating to the future movement of the motor vehicle 1 on the road 8 is calculated by the driver assistance system 6 . This trajectory is received by the determination unit 3 from the driver assistance system 6 .
  • the calculation unit 4 calculates a respective light distribution for each of the headlamps 2 of the motor vehicle 1 .
  • the respective light distribution is calculated in such a manner that a course 13 of the trajectory is projected onto the road 8 as part of the light distribution.
  • the trajectory is represented by a line 14 .
  • the motor vehicle 1 drives along the line 14 in the present example during its autonomous drive.
  • the headlamps 2 are executed as high-resolution headlamps.
  • the headlamps 2 may, for example, each have a matrix lighting, an arrangement of micromirrors, an arrangement of liquid crystals or a laser scanner.
  • the motor vehicle 1 will move along the line 14 at constant velocity according to the determined trajectory up to the point 18 . From the point 18 , the motor vehicle 1 will reduce its velocity, that is, it will brake and thus continue to follow line 14 with reduced velocity. Due to the braking maneuver, it is planned that the motor vehicle 1 will come to a rest at a point 19 .
  • the two points 18 , 19 characterize in general a portion of the trajectory in which an acceleration of the motor vehicle 1 parallel to its longitudinal direction is planned. In other words, the point 18 characterizes a point where an acceleration maneuver is started and the point 19 characterizes a point where the acceleration maneuver is finished. As already explained, the term “acceleration maneuver” refers to both braking and speeding up.
  • the calculation unit 4 calculates the light distribution for the headlamps 2 in such a manner that the line 14 as well as a symbol 10 and a stop line 12 are projected onto the road 8 as part of the light distribution.
  • the calculation unit calculates which brightness distribution 20 is to be emitted by the headlamps 2 , in order to display the line 14 , the symbol 10 as well as the stop line 12 on the road 8 .
  • the light distribution is a calculation variable which is calculated in order to control the headlamps 2 .
  • the control unit 5 controls the headlamps 2 based on this calculated light distribution in such a manner that each of the headlamps 2 emits a brightness distribution 20 corresponding to the respective light distribution.
  • the symbol 10 comprises at least one arrow 11 , in the present case two arrows 11 .
  • the at least one arrow 11 may be directed parallel to the longitudinal direction of the motor vehicle 1 corresponding to its vector of an acceleration.
  • the acceleration of the motor vehicle 1 parallel to its longitudinal direction can be induced for example by braking or speeding up. In other words, either the velocity of the motor vehicle 1 can be raised or reduced. In the present case, the velocity of the motor vehicle 1 is reduced from the point 18 . Therefore, the at least one arrow 11 present is directed against the course 13 of the trajectory. In another example, in which the motor vehicle 1 raises its velocity, the at least one arrow 11 can be directed corresponding to the course 13 of the trajectory.
  • the symbol 10 or the at least one arrow 11 is arranged where the motor vehicle 1 will start the velocity change or acceleration parallel to the driving direction.
  • further symbols 15 can be displayed over the part of the course 13 of the trajectory over which the acceleration parallel to the driving direction is stipulated. These further symbols 15 can resemble the symbol 10 , for example. In the present case, however, the symbols 15 are smaller than the symbol 10 . In the present case, the further symbols 15 are displayed along the course 13 of the trajectory between the points 18 and 19 , since the braking maneuver is stipulated between these two points 18 , 19 .
  • the fact that the motor vehicle 1 is expected to come to a rest at the point 19 is represented by the stop line 12 .
  • the stop line 12 is directed orthogonal to the course 13 of the trajectory in the point 19 . By displaying the stop line 12 , it can be displayed to other traffic participants that the vehicle 1 is expected to come to a rest at the point 19 .
  • a brightness of the light distribution in an area locally around the course 13 represents a velocity of the motor vehicle 1 , which is stipulated in the respective point.
  • a rise in the velocity can be represented in this case by a brightness distribution 20 becoming brighter along the course 13 .
  • a reduction in the velocity can be represented by the brightness distribution becoming darker along the course 13 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
US16/771,850 2017-12-20 2018-12-11 Method for illuminating a road area by projecting a trajectory, and motor vehicle Active US11021096B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102017223451.2 2017-12-20
DE102017223451.2A DE102017223451B4 (de) 2017-12-20 2017-12-20 Verfahren zum Ausleuchten eines Fahrbahnbereichs durch Projizieren einer Trajektorie sowie Kraftfahrzeug
PCT/EP2018/084400 WO2019121175A1 (fr) 2017-12-20 2018-12-11 Procédé destiné à éclairer une zone de chaussée en projetant une trajectoire et véhicule automobile

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US20210107394A1 US20210107394A1 (en) 2021-04-15
US11021096B2 true US11021096B2 (en) 2021-06-01

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US (1) US11021096B2 (fr)
EP (1) EP3687859B1 (fr)
CN (1) CN111491827B (fr)
DE (1) DE102017223451B4 (fr)
WO (1) WO2019121175A1 (fr)

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CN115571044A (zh) * 2021-08-16 2023-01-06 华为技术有限公司 一种车辆灯光的控制方法、灯光系统以及车辆
DE102021127984A1 (de) 2021-10-27 2023-04-27 Audi Aktiengesellschaft Verfahren zum Simulieren eines Parcours für ein Kraftfahrzeug, Steuereinrichtung, Kraftfahrzeug, Speichermedium, mobiles Endgerät, und Servervorrichtung

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DE102017223451B4 (de) 2019-08-08
WO2019121175A1 (fr) 2019-06-27
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CN111491827A (zh) 2020-08-04
CN111491827B (zh) 2023-04-21
US20210107394A1 (en) 2021-04-15
DE102017223451A1 (de) 2019-06-27

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